pramodkmr73
You can see if WhatsApp has an API or mechanism to send API requests. If so you can utilize the osTicket API and send requests from WhatsApp to create Tickets.
As for sending updates to the users in WhatsApp from osTicket you can set the User's email address in osTicket to a phone number email (if WhatsApp has that feature). Popular providers like ATT have this feature by default where each phone number has two emails that will deliver and send SMS/email (eg. 1234567@txt.att.net
and 1234567@mms.att.net
). However, Agents would still have to login to the portal to reply to Tickets as there is no possibility for such integration unless you customize the code like @ntozier said.
Cheers.